Agent skill

PPTX Skill

by OpenLoaf in OpenLoaf/OpenLoaf

当用户要求对 PowerPoint 幻灯片(.pptx)做任何操作时触发:阅读、总结、提取、编辑、创建、格式转换均适用。核心认知:PPTX 是视觉结构化文件——图表、排版、示意图等内容靠纯文字抽取无法可靠还原。理解幻灯片内容的正确路径是:用 PptxInspect render 把目标页渲染成 PNG,再交给视觉模型(CloudImageUnderstand)理解,而不是仅靠…

AGPL-3.0Auto-check passedDocuments & Office

Install PPTX Skill

skills CLI
$ npx skills add OpenLoaf/OpenLoaf --skill pptx-skill -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install OpenLoaf/OpenLoaf pptx-skill --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/OpenLoaf/OpenLoaf.git skills-src && mkdir -p .claude/skills && cp -r skills-src/apps/server/src/ai/builtin-skills/pptx .claude/skills/pptx-skill && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
pptx-skill
GitHub stars
107
Token cost
~2.1k tokens
SKILL.md length
315 words
Files
1
Skills in repo
34
Repo updated
First seen
Licence
AGPL-3.0

At a glance

当用户要求对 PowerPoint 幻灯片(.pptx)做任何操作时触发:阅读、总结、提取、编辑、创建、格式转换均适用。核心认知:PPTX 是视觉结构化文件——图表、排版、示意图等内容靠纯文字抽取无法可靠还原。理解幻灯片内容的正确路径是:用 PptxInspect render 把目标页渲染成 PNG,再交给视觉模型(CloudImageUnderstand)理解,而不是仅靠…

  • Works in 4 steps: 读:PptxInspect(summary) 先行 → 写:JsSandbox + pptxgenjs → 格式互转 → …
  • Tasks that involve PowerPoint presentations
  • SKILL.md covers 工具清单, 1. 读:PptxInspect(summary) 先行, 2. 写:JsSandbox + pptxgenjs and 2.4 单页视觉识图(按模型能力分支), plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

PPTX Skill is an agent skill from OpenLoaf/OpenLoaf. 当用户要求对 PowerPoint 幻灯片(.pptx)做任何操作时触发:阅读、总结、提取、编辑、创建、格式转换均适用。核心认知:PPTX 是视觉结构化文件——图表、排版、示意图等内容靠纯文字抽取无法可靠还原。理解幻灯片内容的正确路径是:用 PptxInspect render 把目标页渲染成 PNG,再交给视觉模型(CloudImageUnderstand)理解,而不是仅靠 text/outline 文字提取。文字工具仅作补充上下文使用。典型说法:"总结这份 PPT"、"这个 deck 在讲什么"、"第 3 页讲什么"、"描述第 5 页内容"、"帮我做一份 Q4 汇报 PPT"、"改第 3 页标题"。用户提到 .pptx 文件、deck、幻灯片、演示文稿时都加载本技能。

Its SKILL.md is about 2.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Documents & Office, covering PowerPoint presentations. It works with Microsoft PowerPoint and python-pptx. The repository describes itself as: 🍞Open-source, local-first AI workspace with Agents, multi-model chat (GPT/Claude/Gemini/DeepSeek), Notion-like docs, AI image & video generation, email, calendar & terminal…. The licence is AGPL-3.0.

When your agent uses it

  • Tasks that involve PowerPoint presentations

Example prompts

  • “总结这份 PPT”
  • “这个 deck 在讲什么”
  • “第 3 页讲什么”
  • “/pptx-skill”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. 读:PptxInspect(summary) 先行
  2. 写:JsSandbox + pptxgenjs
  3. 格式互转
  4. 常见错误兜底

What it can do on your machine

Read from SKILL.md and the folder at commit f7eccf6. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

PPTX Skill loads about 2.1k tokens when it runs. Until then it costs about 88 tokens; SKILL.md has 315 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~88
When it runs · the whole SKILL.md, loaded when a task matches
~2.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from OpenLoaf/OpenLoaf at commit f7eccf6, republished under its AGPL-3.0 licence (© OpenLoaf). 315 words, ~2,097 tokens.

Download SKILL.mdSave it as .claude/skills/pptx-skill/SKILL.md (or your agent's skills folder).
name
pptx-skill
description
当用户要求对 PowerPoint 幻灯片(.pptx)做任何操作时触发:阅读、总结、提取、编辑、创建、格式转换均适用。核心认知:PPTX 是视觉结构化文件——图表、排版、示意图等内容靠纯文字抽取无法可靠还原。理解幻灯片内容的正确路径是:用 PptxInspect render 把目标页渲染成 PNG,再交给视觉模型(CloudImageUnderstand)理解,而不是仅靠 text/outline 文字提取。文字工具仅作补充上下文使用。典型说法:"总结这份 PPT"、"这个 deck 在讲什么"、"第 3 页讲什么"、"描述第 5 页内容"、"帮我做一份 Q4 汇报 PPT"、"改第 3 页标题"。用户提到 .pptx 文件、deck、幻灯片、演示文稿时都加载本技能。

PPTX 技能

读用 PptxInspect;写 / 改 / 创建用 JsSandbox 跑 Node 脚本(库首选 pptxgenjs);格式互转用 DocConvert;看图 / OCR 用 CloudImageUnderstand。

工具清单

工具做什么只读
PptxInspect读:summary / outline / text / notes / tables / shapes / images / xml / render是
JsSandbox所有写:create / edit / 从零生成;用 pptxgenjs 创建新 deck,用 adm-zip 改现有 XML否
DocConvertpptx ↔ pdf / html / md否
CloudImageUnderstand渲染后的幻灯片 OCR / 图表理解否

加载(两步):

  1. LoadSkill pptx-skill
  2. ToolSearch(query: "select:PptxInspect,JsSandbox,DocConvert")

Read / DocPreview 对 .pptx 只返回 Markdown 级正文(丢形状坐标 / 备注 / 表格结构);任何"分析/总结/改/评审 PPT"都走 PptxInspect + JsSandbox。


1. 读:PptxInspect(summary) 先行

PptxInspect { action: "summary", filePath: "…" }

返回 slideCount / layoutCount / masterCount / hasNotes / hasCharts / hasSmartArt / creator / modifiedAt / fileSize,并给出 suggestedNextTool,按特征分派:

特征下一步
不知道 deck 形状summary → outline 扫标题
需要看幻灯片内容text(正文)/ notes(演讲者备注)
需要定位异常shapes 拿形状树,再 render 可疑页
需要视觉验证render(slideNumbers 过滤)
有嵌入图片要导出images(extractImages=true)
需要改 XML 结构xml(partName 指定部件)
1.1 render 说明

render 使用 node-pptx-png(skia-canvas,纯 Node),不依赖 LibreOffice。

已知局限:

  • SmartArt、自定义 DrawingML 图表(非 OpenXML chart)、WMF/EMF 矢量底图可能失真
  • 失真时 fallback → DocConvert(from="pptx", to="pdf") + PdfInspect(render) (走 LibreOffice 渲染链),或直接 render + CloudImageUnderstand 做 OCR

2. 写:JsSandbox + pptxgenjs

2.1 Demo:生成中文季度汇报 PPT
js
import pptxgen from 'pptxgenjs'

const pres = new pptxgen()
// 标准 PowerPoint 宽屏是 13.333 × 7.5 英寸;pptxgenjs 里用 LAYOUT_WIDE。
// 不要把 13.33 这套坐标和 LAYOUT_16x9(10 × 5.625 英寸)混用,否则元素会画到页外。
pres.layout = 'LAYOUT_WIDE'
pres.defineSlideMaster({
  title: 'MAIN',
  background: { color: 'FFFFFF' },
  objects: [
    { rect: { x: 0, y: 7.0, w: 13.33, h: 0.5, fill: { color: '1F3A8A' } } },
    { text: {
      text: 'OpenLoaf · 2026 Q1 业务回顾',
      options: { x: 0.5, y: 7.05, w: 12, h: 0.4, fontSize: 10, color: 'FFFFFF' },
    }},
  ],
})

// 封面
const s1 = pres.addSlide({ masterName: 'MAIN' })
s1.addText('2026 Q1 业务回顾', {
  x: 0.5, y: 2.2, w: 12.3, h: 1.5,
  fontSize: 44, bold: true, color: '1F3A8A',
  fontFace: 'Microsoft YaHei',          // CJK 必设
})
s1.addText('产品部 · 张三   2026-04-20', {
  x: 0.5, y: 4.0, w: 12.3, h: 0.6,
  fontSize: 18, color: '475569', fontFace: 'Microsoft YaHei',
})

// 核心指标
const s2 = pres.addSlide({ masterName: 'MAIN' })
s2.addText('核心指标', {
  x: 0.5, y: 0.4, w: 12.3, h: 0.8,
  fontSize: 28, bold: true, color: '1F3A8A', fontFace: 'Microsoft YaHei',
})
const kpis = [
  { label: '营收',   value: '+32%', color: '16A34A' },
  { label: '付费用户', value: '1.2 万', color: '2563EB' },
  { label: 'NPS',    value: '42 → 51', color: '9333EA' },
]
kpis.forEach((k, i) => {
  const x = 0.5 + i * 4.3
  s2.addShape(pres.ShapeType.roundRect, {
    x, y: 2.0, w: 4.0, h: 3.0, fill: { color: 'F1F5F9' }, line: { color: 'CBD5E1' },
  })
  s2.addText(k.value, {
    x, y: 2.4, w: 4.0, h: 1.0, align: 'center',
    fontSize: 40, bold: true, color: k.color, fontFace: 'Microsoft YaHei',
  })
  s2.addText(k.label, {
    x, y: 3.6, w: 4.0, h: 0.6, align: 'center',
    fontSize: 18, color: '475569', fontFace: 'Microsoft YaHei',
  })
})
s2.addNotes('Q1 三大核心指标均显著超预期。付费用户环比 +46%。')

// 带柱状图
const s3 = pres.addSlide({ masterName: 'MAIN' })
s3.addText('月度营收', {
  x: 0.5, y: 0.4, w: 12.3, h: 0.8,
  fontSize: 28, bold: true, color: '1F3A8A', fontFace: 'Microsoft YaHei',
})
s3.addChart(pres.ChartType.bar, [{
  name: '营收(万元)',
  labels: ['1月', '2月', '3月'],
  values: [820, 1050, 1340],
}], {
  x: 1.0, y: 1.5, w: 11.3, h: 5.5,
  showTitle: false, showLegend: true, showValue: true,
  catAxisLabelFontFace: 'Microsoft YaHei',
  valAxisLabelFontFace: 'Microsoft YaHei',
})

// 结尾 Q&A
const s4 = pres.addSlide({ masterName: 'MAIN' })
s4.addText('Q & A', {
  x: 0.5, y: 3.0, w: 12.3, h: 1.5, align: 'center',
  fontSize: 60, bold: true, color: '1F3A8A', fontFace: 'Microsoft YaHei',
})

await pres.writeFile({ fileName: 'q1_review.pptx' })
console.log('q1_review.pptx written')

关键点:

  • pptxgenjs 的 API 签名全是 对象形式({x, y, w, h, fontSize, ...}),不用拼 JSON 字符串。
  • 先定页面坐标系再摆元素:LAYOUT_WIDE = 13.333 × 7.5(标准宽屏);LAYOUT_16x9 = 10 × 5.625。如果坐标按 13.33 写,就必须用 LAYOUT_WIDE 或自定义同尺寸 layout。
  • CJK 必给 fontFace(如 'Microsoft YaHei' / 'Noto Sans CJK SC'),否则默认英文字体渲染中文时可能被替换或字距异常。
  • addChart 原生支持 bar / line / pie / doughnut;如果模板要的是"图片感"图表,也可以用 chartjs-node-canvas 画 PNG 再 addImage。
2.2 Demo:基于数据做 N 页(每条数据一页)
js
import pptxgen from 'pptxgenjs'

const items = [
  { title: '镜头 1:外观亮相', desc: '城市航拍开场 → V6 多角度路跑快切 → 驶入批发市场' },
  { title: '镜头 2:装载实力', desc: '店主迎接 → 开箱满载 → 后备箱 87% 开启率 1831mm' },
  { title: '镜头 3:超级底盘', desc: '离地间距 186mm + 座椅放倒装货 + 固定带锚点' },
]

const pres = new pptxgen()
pres.layout = 'LAYOUT_WIDE'

const cover = pres.addSlide()
cover.addText('向上 V6 PV 分镜汇报', {
  x: 0.5, y: 2.8, w: 12.3, h: 1.3, align: 'center',
  fontSize: 40, bold: true, color: '0F172A', fontFace: 'Microsoft YaHei',
})

items.forEach((it, i) => {
  const s = pres.addSlide()
  s.addText(`${i + 1}. ${it.title}`, {
    x: 0.5, y: 0.5, w: 12.3, h: 0.8,
    fontSize: 26, bold: true, color: '1F3A8A', fontFace: 'Microsoft YaHei',
  })
  s.addText(it.desc, {
    x: 0.5, y: 1.7, w: 12.3, h: 3.5,
    fontSize: 20, color: '334155', fontFace: 'Microsoft YaHei',
    valign: 'top',
  })
})

await pres.writeFile({ fileName: 'storyboard.pptx' })
console.log(`storyboard.pptx — ${items.length + 1} slides`)
2.3 Demo:改已有 deck 第 N 页的标题

pptxgenjs 只做生成不读老文件。改老 deck → adm-zip 改 XML:

js
import AdmZip from 'adm-zip'
import fs from 'node:fs/promises'

const zip = new AdmZip(await fs.readFile('deck.pptx'))
const target = 'ppt/slides/slide3.xml'
let xml = zip.readAsText(target)
// 简单替换第一个 a:t 文本
xml = xml.replace(/<a:t>[^<]*<\/a:t>/, '<a:t>新标题</a:t>')
zip.updateFile(target, Buffer.from(xml, 'utf-8'))
await fs.writeFile('deck.pptx', zip.toBuffer())
console.log('slide 3 title updated')

这是硬改 XML 的做法,遇到 run 被拆会失效。稳妥做法是整份 pptxgenjs 重新生成。


2.4 单页视觉识图(按模型能力分支)

当用户问"第 N 页讲了什么" / "这页图表是什么数据" / "看看第 5 页排版" 等需要视觉理解的问题时,按**当前模型的 native-inputs(见每条用户消息末尾的 <system-tag type="msg-context">)**分支:

分支 A — 视觉模型(native-inputs 含 image):渲染后 Read 图片路径,运行时会在下一步以"紧跟其后的 user 消息"形式把图片原生注入,你能直接看到像素。

PptxInspect { action: "render", filePath: "…", slideNumbers: [5], scale: 1.5 }
  → result.data.pages[0].imagePath = "<asset_dir>/slide5-scale1.5.png"
Read { file_path: "<pages[0].imagePath>" }
  → 运行时把图片作为 user-role image part 注入下一步;直接描述你看到的内容

分支 B — 非视觉模型(native-inputs 不含 image):走 CloudImageUnderstand(需 LoadSkill cloud-media-skill)。

CloudImageUnderstand {
  image: { path: "<pages[0].imagePath>" },
  prompt: "请详细描述这页幻灯片:标题、正文要点、图表数据(如有)、排版布局;若页面上没有图表或数据表格,请明确写'本页无数据图表'"
}

⚠️ 反幻觉硬规则(两个分支都适用):准备输出前,问自己"我描述的每一个数字、地区、人名、轴刻度,是否真的来自真正的视觉通道?" —— 分支 A 必须来自运行时刚刚注入的图像 part,分支 B 必须来自 CloudImageUnderstand 返回。两者都没提供可观察的内容时,禁止从文件名、幻灯片标题或上下文"脑补"图片里有什么,只能回复"未能获取图像内容,请确认"或重新走一遍正确分支。

批量识图(整份 deck 视觉总结):render 不传 slideNumbers 拿全部 PNG,按同样的分支逐页处理。超过 20 页建议先 outline 给用户确认再渲染。


3. 格式互转

DocConvert(from="pptx", to="pdf", sourcePath="…")    // 给甲方分发 / LibreOffice 高保真渲染
DocConvert(from="pptx", to="md",  sourcePath="…")    // 提炼正文 / 做总结

4. 常见错误兜底

症状原因处理
PPT_LEGACY_FORMAT.ppt 二进制格式DocConvert(from="ppt", to="pptx") 先转换
中文显示方块 / 全变字母未设 fontFace每个 addText / addChart 传 fontFace: 'Microsoft YaHei'
render 结果 SmartArt 变形node-pptx-png 不支持 SmartArtfallback → DocConvert(to="pdf") + PdfInspect(render)
writeFile 产物打不开路径穿越 / 权限写相对路径就落到 cwd (session asset dir)
生成几十页很慢每页重复 addTextdefineSlideMaster 把公共元素放 master,slide 里只放差异内容

修脚本:JsSandbox(action="edit-and-run", scriptPath=…, edits=[…]) 少传 token。

© OpenLoaf, AGPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in apps/server/src/ai/builtin-skills/pptx of OpenLoaf/OpenLoaf.

Open the folder on GitHubat commit f7eccf6

Compare with similar skills

PPTX Skill next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

PPTX Skill compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
PPTX Skill this skillOpenLoaf/OpenLoaf107—~2.1kAutomated safety check: PassAGPL-3.0
Slidesfcakyon/claude-codex-settings1.2k1 repos~1.1kAutomated safety check: PassMIT
Thesis Defense PPTX Builderzouchenzhen/thesis-defense-pptx-skill266—~2.4kAutomated safety check: PassApache-2.0
Powerpoint SlidesNoi1r/powerpoint-skill123—~12kAutomated safety check: NotesMIT
PPTX HTML Fidelity Auditsanqiufong/slides-from-anything1321 repos~3.5kAutomated safety check: PassApache-2.0
PPTX Chart Forensicsaiden0z/pptx-renderer126—~970Automated safety check: PassApache-2.0

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    Handles a real email account through query and mutate tools: check the inbox, read, search, reply, forward, compose and organize, with sending always confirmed first.

    107 GitHub stars~1.8k tokensUpdated 4 mo ago
    Auto-check passed
  • macOS Desktop Control

    OpenLoaf/OpenLoaf

    Guides an agent to operate native macOS apps by surveying an app first, acting through intents, menus or keystrokes, and verifying each step, in OpenLoaf Desktop only.

    107 GitHub stars~2.4k tokensUpdated 4 mo ago
    Auto-check passed

Questions about PPTX Skill

What does PPTX Skill do?

当用户要求对 PowerPoint 幻灯片(.pptx)做任何操作时触发:阅读、总结、提取、编辑、创建、格式转换均适用。核心认知:PPTX 是视觉结构化文件——图表、排版、示意图等内容靠纯文字抽取无法可靠还原。理解幻灯片内容的正确路径是:用 PptxInspect render 把目标页渲染成 PNG,再交给视觉模型(CloudImageUnderstand)理解,而不是仅靠…. PPTX Skill is an agent skill from OpenLoaf/OpenLoaf.

When should I use PPTX Skill?

PPTX Skill fits situations like: tasks that involve PowerPoint presentations.

How do I install PPTX Skill in Claude Code?

Run `npx skills add OpenLoaf/OpenLoaf --skill pptx-skill -a claude-code`. Or copy the skill folder (apps/server/src/ai/builtin-skills/pptx in OpenLoaf/OpenLoaf) into .claude/skills/pptx-skill in your project. Claude Code loads it when a task matches its description.

How do I install PPTX Skill in Codex?

Run `npx skills add OpenLoaf/OpenLoaf --skill pptx-skill -a codex`. Or copy the skill folder (apps/server/src/ai/builtin-skills/pptx in OpenLoaf/OpenLoaf) into .agents/skills/pptx-skill in your project. Codex loads it when a task matches its description.

Can I use PPTX Skill in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add OpenLoaf/OpenLoaf --skill pptx-skill -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/pptx-skill, .gemini/skills/pptx-skill, .github/skills/pptx-skill and .opencode/skills/pptx-skill in your project.

What does PPTX Skill need to run?

SKILL.md names no scripts, command-line tools or credentials: PPTX Skill is instructions for the agent only.

Does PPTX Skill access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is PPTX Skill safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does PPTX Skill use?

PPTX Skill is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does PPTX Skill use?

About 2.1k tokens (SKILL.md is roughly 8.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to PPTX Skill?

Skills that share tags, products or a category with PPTX Skill: Slides (fcakyon/claude-codex-settings, 1.2k stars), Thesis Defense PPTX Builder (zouchenzhen/thesis-defense-pptx-skill, 266 stars), Powerpoint Slides (Noi1r/powerpoint-skill, 123 stars) and PPTX HTML Fidelity Audit (sanqiufong/slides-from-anything, 132 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains PPTX Skill?

OpenLoaf (a GitHub organization) maintains it in OpenLoaf/OpenLoaf, which has 107 GitHub stars. The repository holds 34 skills in this directory. The repository was last updated on May 14, 2026.

Source: OpenLoaf/OpenLoaf on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.